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公开(公告)号：US20230309822A1
公开(公告)日：2023-10-05
申请号：US18126447
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/103 , A61B3/0041 , A61B3/0025
Abstract: An ophthalmologic apparatus includes a subjective measurement optical system configured to measure a subjective refractive value of a subject eye, an objective measurement optical system configured to measure objective refractive characteristics of the subject eye, and a controller configured to control the subjective measurement optical system and the objective measurement optical system. The controller is further configured to measure the objective refractive characteristics of the subject eye by the objective measurement optical system and perform objective monitoring to monitor objective measurement information obtained by the measurement of the objective refractive characteristics during an RG test for checking whether or not corrected power is overcorrected or undercorrected by the subjective measurement optical system.
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公开(公告)号：US20190099076A1
公开(公告)日：2019-04-04
申请号：US16085595
申请日：2017-02-20
Applicant: OSAKA UNIVERSITY , TOPCON CORPORATION
Inventor： Takashi FUJIKADO , Masakazu HIROTA , Kohji NISHIDA , Makoto SAIKA , Tatsuo YAMAGUCHI , Suguru MIYAGAWA
Abstract: An eye-fatigue examining device and an eye-fatigue examining method capable of examining eye fatigue of a subject's eye regardless of an age of a patient are provided. The eye-fatigue examining device includes: a light quantity difference adjusting unit that increases a light quantity difference between lights respectively incident on right and left subject's eyes; a gaze direction detecting unit that detects gaze directions of the respective subject's eyes while the light quantity difference adjusting unit increases the light quantity difference; and a light quantity difference deciding unit that decides a specific light quantity difference at which a change in the gaze directions due to the increase in the light quantity difference occurs, based on the detection result of the gaze direction detecting unit.
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3.发明申请公开(公告)号：US20200093363A1
公开(公告)日：2020-03-26
申请号：US16540085
申请日：2019-08-14
Applicant: TOPCON CORPORATION
Inventor： Makoto SAIKA , Tsutomu KIKAWA
Abstract: An ophthalmologic apparatus includes an OCT measurement unit, a corneal shape measurement unit, an eyeball model generator, and a site specifying unit. The OCT measurement unit is configured to acquire data of a subject's eye by deflecting measurement light using an optical scanner to project onto the subject's eye and detecting interference light between returning light of the measurement light from the subject's eye and reference light. The corneal shape measurement unit is configured to obtain curvature radius distribution on a cornea by detecting returning light of a measurement pattern projected onto a cornea of the subject's eye. The eyeball model generator is configured to generate an eyeball model using the curvature radius distribution on the cornea. The site specifying unit is configured to specify a traveling direction of the measurement light by performing ray tracing on the measurement light incident on each of a plurality of incident positions on the cornea based on a scan angle and the eyeball model, and to specify a position corresponding to an intraocular site of the subject's eye in the traveling direction based on the data acquired using the measurement light.
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公开(公告)号：US20190090735A1
公开(公告)日：2019-03-28
申请号：US16139195
申请日：2018-09-24
Applicant: TOPCON CORPORATION
Inventor： Kouta FUJII , Makoto SAIKA , Jun SAKAI
Abstract: An ophthalmic apparatus of an exemplary embodiment is capable of applying OCT to the fundus of a subject's eye, and includes an optical system, an optical scanner, an optical path length changing device, and a controller. The optical system splits light output front a light source into measurement light and reference light, projects the measurement light onto the fundus, generates interference light by superposing returning light of the measurement light from the subject's eye on the reference light, and detects the interference light. The optical scanner deflects the measurement light for scanning the fundus. The optical path length changing device changes at least one of an optical path length of the measurement light and an optical path length of the reference light. The controller controls the optical scanner based on at least the optical path length.
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公开(公告)号：US20190082957A1
公开(公告)日：2019-03-21
申请号：US16132507
申请日：2018-09-17
Applicant: TOPCON CORPORATION
Inventor： Kouta FUJII , Makoto SAIKA , Jun SAKAI
Abstract: An ophthalmic apparatus of an embodiment include a data acquisition device, distribution data generator, correction value calculator, magnification corrector, and data comparator. The data acquisition device acquires three dimensional data by applying OCT to the fundus of a subject's eye. The distribution data generator generates distribution data of a predetermined measurement value in the fundus based on the three dimensional data. The correction value calculator calculates a magnification correction value based on a predetermined condition for acquiring the three dimensional data. The magnification corrector changes at least one of the size of standard distribution data generated in advance for the predetermined measurement value and the size of the distribution data, based on the magnification correction value. The data comparator compares the distribution data with the standard distribution data, at least one of whose sizes has been changed by the magnification corrector.
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Patent Agency Ranking
公开(公告)号：US20240090761A1
公开(公告)日：2024-03-21
申请号：US18368945
申请日：2023-09-15
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Yoko TATARA , Makoto SAIKA
IPC: A61B3/103
CPC classification number: A61B3/103
Abstract: An ophthalmologic apparatus includes an objective measurement optical system that measures an objective refraction characteristic of a subject eye and a control portion that performs total control including control of the objective measurement optical system, wherein the control portion analyzes a characteristic amount of a ring image obtained by measuring the objective refraction characteristic of the subject eye to feedback to a subjective examination content of the subject eye according to an analysis result of the characteristic amount of the ring image.
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公开(公告)号：US20230309819A1
公开(公告)日：2023-10-05
申请号：US18127280
申请日：2023-03-28
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Makoto SAIKA , Takafumi YUKIMORI
CPC classification number: A61B3/032 , A61B3/0075 , A61B3/18
Abstract: An ophthalmologic apparatus includes an optotype presentation mechanism that presents an optotype to a left subject eye and a right subject eye, and is capable of changing a brightness difference between the optotype presented to the left subject eye and the optotype presented to the right subject eye, a convergence adjustment mechanism configured to adjust a convergence distance, an eye information obtaining portion configured to obtain eye information on the left subject eye and the right subject eye, and a controller configured to control the optotype presentation mechanism, the convergence adjustment mechanism, and the eye information obtaining portion, wherein the controller sets the convergence distance to a distance different from a optotype presentation distance, gradually increases a brightness difference, and detects a visual line direction of the left subject eye and a visual line direction of the right subject eye based on the eye information.
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公开(公告)号：US20230309814A1
公开(公告)日：2023-10-05
申请号：US18126445
申请日：2023-03-26
Applicant: TOPCON CORPORATION
Inventor： Takafumi YUKIMORI , Makoto SAIKA , Yoko TATARA , Akio HAYASHI
CPC classification number: A61B3/0091 , A61B3/0058 , A61B3/1035
Abstract: An ophthalmologic apparatus includes an objective measurement optical system that is configured to objectively measure eye characteristics of a subject eye; an optotype projection system that is configured to present a fixation target to the subject eye at a predetermined presentation position and apply fog to the subject eye; and a controller that is configured to control the objective measurement optical system and optotype projection system. The controller is further configured to objectively measure the eye characteristics over time by changing a presentation position of the fixation target from the predetermined presentation position in a direction to increase an amount of fog and presenting the fixation target.
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公开(公告)号：US20190082955A1
公开(公告)日：2019-03-21
申请号：US16129839
申请日：2018-09-13
Applicant: TOPCON CORPORATION
Inventor： Makoto SAIKA
Abstract: An ophthalmologic apparatus includes an optical scanner, an interference optical system that splits light from a light source into measurement light and reference light, projects the measurement light onto a subject's eye via the optical scanner, and detects interference light generated from returning light of the measurement light from the subject's eye and the reference light, a controller that controls the optical scanner so as to perform scan by the measurement light in an intersecting direction which intersects a traveling direction of the measurement light, and an analyzer that specifies a scan length based on a detection result of the interference light corresponding to the scan, the detection result being acquired by the interference optical system, the scan length being a length of a scan range in the intersecting direction within a characteristic region in an anterior segment of the subject's eye, and specifies a movement amount of the subject's eye based on a reference value of the characteristic region and the scan length.
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公开(公告)号：US20250107708A1
公开(公告)日：2025-04-03
申请号：US18896568
申请日：2024-09-25
Applicant: TOPCON CORPORATION
Inventor： Yoko TATARA , Takafumi YUKIMORI , Makoto SAIKA , Ryoka NORO , Manabu SAKAIHARA
Abstract: An ophthalmologic apparatus includes a visual-target presenting portion that is configured to present visual targets to left and right subject eyes, respectively; and an objective measurement optical system that is configured to objectively measure eye characteristics of the left and right subject eyes, respectively. The visual-target presenting portion is configured to present the visual targets while changing a convergence position, where two lines of sight from positions of the left and right subject eyes intersect, with pinhole plates respectively disposed at positions conjugate with pupils of the left and right subject eyes. The objective measurement optical system is configured to obtain the objective refractive values of the left and right subject eyes, respectively, under a condition where the pinhole plates are respectively disposed by the visual-target presenting portion and the visual targets presented at the convergence position are binocularly fused.
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